<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>图片</title>
  <link href="css/bootstrap.min.css" rel="stylesheet"/>
  <script src="js/jquery-3.3.1.min.js"></script>
  <script src="js/bootstrap.min.js"></script>
  <style>
    img{
      width: 300px;
      height: 300px;
    }
    #img3{
      width: 300px;
      height: 300px;
    }
  </style>
</head>
<body>
<!--<img src="img/e25.jpg" class="img-rounded">-->
<!--<img src="img/e25.jpg" class="img-circle">-->
<!--<img src="img/e25.jpg" class="img-thumbnail">-->
<div class="container">
  <div class="row">
    <div class="col-xs-4">
      <img src="img/e25.jpg" class="img-rounded">
    </div>
    <div class="col-xs-4">
      <img src="img/e25.jpg" class="img-circle">
    </div>
    <div class="col-xs-4">
      <img id="img3" src="img/e25.jpg" class="img-thumbnail">
    </div>
  </div>
</div>
</body>
</html>